We start with a liquid membrane, cold applied & water-based, from WR Meadows. Next, we apply a double layer of R10 DuroSpan GPS, offset vertically & horizontally to avoid seam alignment. Attachment is without making penetrations into the wall. Finally, we add overlapped drainboard that is dimpled with a soil-facing typar fabric (Dörken DELTA®-DRAIN), which helps reduce hydrostatic buildup and provides another layer of waterproofing.

We go beyond required code and use a building science-based approach.